Electronics Forum | Wed May 23 13:36:52 EDT 2001 | Mark Smithers
The trend of the smaller PCB and devices has been occurring for many years now. However, recently, we are seeing signs that a segment of the market is returning to larger board sizes....30" x 30" and larger. Does anyone have good sources for data a
Electronics Forum | Sat Dec 11 11:01:11 EST 1999 | Mark W.
In answer to your question no. Fiducials should always be as far apart from each other in both directions (X,Y) as possible. This will allow ANY placement machine to calculate the EXACT location and rotation of the PCB, and therefore correct the moun
Electronics Forum | Fri Aug 20 11:24:54 EDT 1999 | Chuck B.
I am being asked, by my vendor and Purchasing people about converting from Tin/lead pads on P.C.B's to Electroless Tin Plating. Can any one tell me what I have to change in my SMT process (paste, reflow, etc) If any? I ran one P.C.Board and I
Electronics Forum | Thu Nov 14 17:57:34 EST 2002 | jonfox
Even though I don't use them, the 3 Topaz Xi's. On larger runs, you could split the workload across all three at one time or run three different jobs(assumming feeder requirements) on the three machines. Even though you could possibly achieve highe
Electronics Forum | Wed Oct 30 09:43:01 EST 2002 | gregp
Larger tighter spaced balls will present a problem in sealing the vacuum cup. There will be more leakage in this case. It really depends upon the application. The BGA you mention should not be a major concern. The bigger problems are with bigger
Electronics Forum | Fri Jan 10 14:11:27 EST 2003 | genny
It's always safer to use a higher voltage cap than a lower voltage cap. It isn't a fuse... There is only one case where we dropped the voltage on a cap. We were using a tantalum cap that was rated to 16V, but had been built in the standard packagi
Electronics Forum | Thu May 06 19:13:24 EDT 2004 | Greg York
Watch your dwell time especially if larger components. Problem is normally associated with lower temp as well as insufficient flux coverage with larger massed boards or ground planes. Try to hand spray a board to check that fluxer operation is OK. If
Electronics Forum | Wed Nov 14 13:05:40 EST 2007 | rgduval
I had one project with micro-vias in 0805 and larger pads, with no issues. But my most recent project had vias that were larger than the 0402 pads that the via was in. To the point that for a number of the lands, there was no visible pads (a couple
Electronics Forum | Tue Apr 30 12:20:52 EDT 2013 | deanm
We are using a Zebra S4M (soon to be discontinued) for our larger labels, not for PCBs. For very small labels that would fit well on a PCB, we use a Brady BMP71 which is small, versatile and does not require a PC. If you are running mid to larger vol
Electronics Forum | Thu Oct 31 02:43:55 EDT 2013 | hqew2013
The smallest finished hole available for 2 layer board is .020”. The smallest finished hole available for 4+ layer board is .014”. All holes are round and drilled through from top to bottom layer of board. No blind or buried vias. For holes = .15
